Overview
The ZF 5841.300.365 COMPRESSION SPRING is a critical OEM genuine component engineered for the WG100, WG130, and WG131 transmission series. This precision spring resides within the valve body or shift rail assembly, where it provides the necessary preload and return force for hydraulic spools and mechanical actuators. The SKU 5841.300.365 ensures consistent clutch engagement pressure and smooth gear transitions. When this spring fatigues, it compromises the entire shift sequence, often leading to delayed engagement or erratic pressure regulation. This part works in concert with the 2098109042: DIFFERENTIAL and the 2098309011: CROWN WHEEL to maintain driveline integrity under heavy load.
Symptoms of Failure
- Delayed or harsh shifting: A worn 5841.300.365 spring loses its tension, causing sluggish gear changes or abrupt engagement as hydraulic timing is disrupted.
- Intermittent gear slipping under load: When the compression spring fails to hold a valve in position, transmission pressure drops, leading to momentary slipping during acceleration or hill climbing.
- Unusual transmission noise (clicking or rattling): A broken or weakened spring can vibrate internally, producing metallic sounds that are often mistaken for bearing failure.
- Erratic pressure regulator behavior: If the spring controlling the pressure regulator valve is compromised, you may observe fluctuating line pressure on a diagnostic gauge, often accompanied by check engine or transmission warning lights.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 5841.300.365 |
| Type | Compression Spring (Helical) |
| Wire Diameter | 3.2 mm (approx.) |
| Outer Diameter | 22.5 mm (approx.) |
| Free Length | 48.0 mm (approx.) |
| Material | Chrome Silicon Steel (SAE 9254) |
| Surface Finish | Phosphate coated / Oil dipped |
| Weight | 0.035 kg (approx.) |
| OEM Reference | ZF 5841.300.365 |
Compatibility
This OEM genuine compression spring is specifically designed for ZF WG-series transmissions. It is a direct fit for the following models:
- ZF WG100 (all variants)
- ZF WG130 (all variants)
- ZF WG131 (all variants)
While primarily intended for these three series, the 5841.300.365 may also be compatible with certain WG180 and WG200 applications where the valve body spring dimensions match. Always verify the free length and wire diameter against your existing spring before installation. This spring is often replaced alongside the 2099209001: DIFFERENTIAL and the 2098309010: DIFFERENTIAL HOUSING during a full transmission overhaul.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098109042 | DIFFERENTIAL | Distributes torque between axles |
| 2098309011 | CROWN WHEEL | Transfers power from pinion to differential |
| 2099209001 | DIFFERENTIAL | Final drive torque distribution |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 2098309009 | DIFFERENTIAL HOUSING | Alternative housing variant |
| 2098309031 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2098309030 | AXLE BEVEL GEAR | Matching bevel gear for differential |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Internal differential gear set |
| 12883200682 | THRUST WASHER | Reduces axial friction in gear sets |
| 0635332059 | BALL BEARING | Supports rotating shafts |
